研究了高压共轨增压中冷柴油机燃用天然气转化制成的合成油(Gas to liquid,GTL)不同添加比例的混合燃料在恒转速增转矩瞬态工况下的微粒排放粒度分布特征,分析了工况瞬变率及GTL添加比例对于微粒排放粒度分布的影响。研究结果表明,随着...研究了高压共轨增压中冷柴油机燃用天然气转化制成的合成油(Gas to liquid,GTL)不同添加比例的混合燃料在恒转速增转矩瞬态工况下的微粒排放粒度分布特征,分析了工况瞬变率及GTL添加比例对于微粒排放粒度分布的影响。研究结果表明,随着恒转速增转矩工况瞬变率的减小,各种试验燃料的微粒排放总量及其随时间变化的增长率均有所降低。随着GTL添加比例的增加,微粒生成总量、核态微粒和超细微粒总数均有所下降,积聚态微粒的生成量在大粒径处稍有增加。在5s增转矩工况下,G20和G30的核态微粒数量明显减少,比国IV石化柴油分别降低了42%和20%。与石化柴油相比,不同瞬变率的增负荷工况下发动机排气中超细微粒和核态微粒的比例,G10燃料稍有增加,G20和G30均有显著降低。展开更多
This paper reviews the status of the gas-to-liquids (GTL) industry-including current commercial plants, announced projects and the technologies that are likely to be implemented in these future projects. Today, only 3...This paper reviews the status of the gas-to-liquids (GTL) industry-including current commercial plants, announced projects and the technologies that are likely to be implemented in these future projects. Today, only 35,000 B/D of GTL products (0.1% of market) are manufactured from commercial gas-based plants. Advances in technology have lowered the cost of plants to the point where GTL plants can be profitable at crude oil prices of $16/B. The advanced stage of development of several proposed GTL projects and attractive integrated economics, for both the gas field and plant, show that GTL can be a significant alternative for monetizing natural gas in the 21st century. GTL technologies includes more than Fischer-Tropsch technology and extends to other liquid fuels, especially in the oxygenate family (methanol, dimethyl ether, etc.).展开更多
文摘研究了高压共轨增压中冷柴油机燃用天然气转化制成的合成油(Gas to liquid,GTL)不同添加比例的混合燃料在恒转速增转矩瞬态工况下的微粒排放粒度分布特征,分析了工况瞬变率及GTL添加比例对于微粒排放粒度分布的影响。研究结果表明,随着恒转速增转矩工况瞬变率的减小,各种试验燃料的微粒排放总量及其随时间变化的增长率均有所降低。随着GTL添加比例的增加,微粒生成总量、核态微粒和超细微粒总数均有所下降,积聚态微粒的生成量在大粒径处稍有增加。在5s增转矩工况下,G20和G30的核态微粒数量明显减少,比国IV石化柴油分别降低了42%和20%。与石化柴油相比,不同瞬变率的增负荷工况下发动机排气中超细微粒和核态微粒的比例,G10燃料稍有增加,G20和G30均有显著降低。
文摘This paper reviews the status of the gas-to-liquids (GTL) industry-including current commercial plants, announced projects and the technologies that are likely to be implemented in these future projects. Today, only 35,000 B/D of GTL products (0.1% of market) are manufactured from commercial gas-based plants. Advances in technology have lowered the cost of plants to the point where GTL plants can be profitable at crude oil prices of $16/B. The advanced stage of development of several proposed GTL projects and attractive integrated economics, for both the gas field and plant, show that GTL can be a significant alternative for monetizing natural gas in the 21st century. GTL technologies includes more than Fischer-Tropsch technology and extends to other liquid fuels, especially in the oxygenate family (methanol, dimethyl ether, etc.).